Door-spring



(Nomoael.) Wl W JACKSON.

' K, DOOR SEEING. l Y No. 294,785l I l I Patented Mar. 11, 1884 Fiyi lx zz/ea se s.

-'IINiTn-ED STATES PATnNT FFICE..

VILLIAM \V. .IACKSO OF CHICAGO, ILLINOIS. I

DOOR-SPRING.

SPECIFICATION forming part of Letters Patent No. 294,785, datedMarch 11, 1884. l

Applicaiicn filed July 23, 1883.` (No model.) l l To all whom it 11i/ay concern:

Be it known that I, WILLTAM W. J AcKsoN, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Imprvements in Door-Springs, of which the following, in connection with the accompanying drawings, is a specification.

In the drawings, Figure 1 is a perspective representa-tion of an open door provided with a door-spring embodying my invention. Fig. 2 is a horizontal section of the door and its frame or casing, taken atan elevation so as to show the construction of the spring or doorcloser. Fig. 3 is a like representation, showing` the spring or closer when not extending entirely through the door. Fig. 4 is a face view of a plate, which I apply to thedoorcasing when employing a spring or closer extending entirely through the door, and Fig. 5 is a plate which I apply to the rear edge of the door. 1

Like letters of reference indicate like parts.

My principal purpose is to construct an autoinatic door-closer in such a manner that it maybe applied to the door so as to be invisible; and to that end my invention consists in certain novel features of construction which I employ for that purpose, and which are hereinafter set forth in my claim.

A represents the door, and B the door-frame or casing.

G is a mortise or bore extending horizontally through the door from its rear or hinged edge toward its free or outer vertical edge. In some instances I may deem it preferable to have this mortise or bore extend entirely through the door, as indicated in Fig. 2, and in others only partly through, as indicatedjin Fig. 3; but in both cases the principal feature of my invention is employed as will hereinafter more fully appear.

.D is a screwor pin inserted into that vpart of the door-case to which the door-hinges are applied, and the outer end of this screw or pin has an .eye to receive a hook, as will hereinafter more fully appear. D is a depression or pocket about the outer end of the screw or pin D.

E is a disk adapted to move freely in the bore O.

F is a hook hooked into the eye of thescrew l or pin D, and connected tothe disk E by means of a cord or smallwire, G.

H is an open spiral spring.

I is a plate applied to the inner or hinged edge of the door, and having therein a horizontal slot, a. The plate I vis located at the inner end of the mortise C, and the hook F passes through the slot a. The spring II is arranged in the mortise C, surrounds the cord or wire G, and bears at one end against the plate I, and at the other against the disk E, the force of the said spring being exerted in such a manner as to hold the disk E yieldingly at such a distance from the plate F as the cord or wire G will permit, all of which will be perceived on reference to Fig. 3. The force of the spring II is such as to hold the door yieldingly in its closed position, but'not such as to prevent it being opened with facility by one wishing to pass through the doorway.

It will be perceived, on reference to' Fig. 1, where the door is shown in its open position,

that the act of opening the door .compresses the spring upon itself', and that as soon as-the door is released the pressure of the spring upon the plate I, while the spring is assuming its normal position, will close the door automatically. This result will also follow when the additional features of construction shown in Fig. 2, and which I will nowvproceed to describe, are employed. In Fig. 2 E performs the function of the disk E, but is located in a mortise or bore extending entirely through the door. rIhis partF/ also performs the funcf tion of ayielding catch or stop. I construct and arrange it so that it will project from the edge of the door into a plate, I', in which is a beveled or V-shaped socket, a, adapted to receive the projecting end of the part E, which is correspondingly beveled, as is clearly indicated in Fig. 2.

In order that the part E' may be adjusted properly with relation to the edge of the door, I run it upon a screw, J, to which I attach one end of the cord G, as shown in Fig. 2. After applying the parts shown in Fig. 2, the part E may be set with facility with relation to the edge of the door by turning the said part in one or the other direction upon the screwthreaded part J. i

It will be'perccivcd that the operation of IOO the parts shown in Fig. 2 are the saine as those shown in Fig. 3, 1with the exception that the catch E will aid in retaining the door in its closed position, but will not materially prevent it from being opened and closed, as the catch will bewithdrawn or begin to move from the socket a. as the door begins to open. The catch and its socket being beveled in the inanner shown and described, operates as a yielding instead of as a positive catch.

A metallic bushing or lining, K, may or may not be employed, as may be deemed best.

Having thus described my invention, what I elaiin as new, and desire to secure by Letters Patent, is'- Tlle combination ol' the door having therein a niortise, C, extending entirely through it from one of its vertical edges to the other, the

said door being provided on its hinged edge with the slotted plate I, located at one end ol" the said n10rtise,tl1e hook F, proj ecting through the slot in the said plate, and connected by means of a cord or Wire, G, to a sliding head, E, having a beveled outer end projecting from the free edge of the door, and arranged in the said niortise, the spring H, arranged between the said plate and the plate I, the fixed screw or pin D, adapted and arranged to receive or engage the hook F, the V-plate If, and the door-frame, substantially as and for the pun poses specified,

WILLIAM W. JACKSON.

Witnesses:

W. S. Bamm, N, Coivipns. 

